Genome size estimation and its associations with body length, chromosome number and evolution in teleost fishes

Genome size estimation and its associations with body length, chromosome number and evolution in teleost fishes

•Information of genome size (GS) is important for various genomic and evolutionary studies.•The study generated new GS records of 43 fish species and revalidated 8 species.•The GS ranged from 0.58 pg in banded gourami to 1.92 pg in scribbled goby.•GS was found to be associated with body length, but...

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Published in:Gene Vol. 864; p. 147294
Main Authors: Kushwaha, Basdeo, Nagpure, Naresh S., Srivastava, Shreya, Pandey, Manmohan, Kumar, Ravindra, Raizada, Sudhir, Agarwal, Suyash, Singh, Mahender, Basheer, Valaparamail S., Kumar, Rahul G., Das, Paramananda, Das, Sofia P., Patnaik, Siddhi, Bit, Amrita, Srivastava, Satish Kumar, Vishwakarma, Achchhe L., Joshi, Chaitanya G., Kumar, Dinesh, Jena, Joy K.
Format: Journal Article
Language:English
Published: Netherlands Elsevier B.V 15-05-2023
Subjects:
Animals
Body length
Catfishes - genetics
Chromosome
Chromosomes - genetics
Cypriniformes - genetics
Evolution
Evolution, Molecular
Fishes
Fishes - genetics
Genome Size
Genomics
Nuclear DNA
Perciformes - genetics
Phylogeny
Genome size
Body length
Chromosome
AGSD
BL
CN
PIC
GS
WGD
Fishes
DNA
Evolution
Nuclear DNA
AIC
PGLS
FC
FIA
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Summary:•Information of genome size (GS) is important for various genomic and evolutionary studies.•The study generated new GS records of 43 fish species and revalidated 8 species.•The GS ranged from 0.58 pg in banded gourami to 1.92 pg in scribbled goby.•GS was found to be associated with body length, but no relationship noticed with the chromosome number. Precise estimation of genome size (GS) is vital for various genomic studies, such as deciding genome sequencing depth, genome assembly, biodiversity documentation, evolution, genetic disorders studies, duplication events etc. Animal Genome Size Database provides GS of over 2050 fish species, which ranges from 0.35 pg in pufferfish (Tetraodon nigroviridis) to 132.83 pg in marbled lungfish (Protopterus aethiopicus). The GS of majority of the fishes inhabiting waters of Indian subcontinent are still missing. In present study, we estimated GS of 51 freshwater teleost (31 commercially important, 7 vulnerable and 13 ornamental species) that ranged from 0.58 pg in banded gourami (Trichogaster fasciata) to 1.92 pg in scribbled goby (Awaous grammepomus). Substantial variation in GS was observed within the same fish orders (0.64–1.45 pg in cypriniformes, 0.70–1.41 pg in siluriformes and 0.58–1.92 pg in perciformes). We examined the relationship between the GS, chromosome number and body length across all the fishes. Body length was found to be associated with GS, whereas no relationship was noticed between the GS and the chromosome number. The analysis using ancestral information revealed haploid chromosome number 25, 27 and 24 for the most recent common ancestor of cypriniformes, siluriformes and perciformes, respectively. The study led to generation of new records on GS of 43 fish species and revalidated records for 8 species. The finding is valuable resource for further research in the areas of fish genomics, molecular ecology and evolutionary conservation genetics.
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content type line 23
ISSN:0378-1119
1879-0038
DOI:10.1016/j.gene.2023.147294